Question

If _______ in class, you will have to clean the classroom for a week as a punishment.

A. caught sleeping　　　　　　

B. caught to sleep

C. catching sleeping　　　　　

D. to catch to sleep

Answer 1

A

 

本题考查过去分词作状语，if也可以省略；sleeping是现在分词作主语补足语，强调动作正在进行。